Tractor



FIG. 1 is a front view showing a tractor according to the present invention;

FIG. 2 is a rear view showing the tractor of FIG. 1;

FIG. 3 is a top plan view showing the tractor of FIG. 1;

FIG. 4 is a bottom plan view showing the tractor of FIG. 1;

FIG. 5 is a right side view showing the tractor of FIG. 1; and,

FIG. 6 is a left side view showing the tractor of FIG. 1. 

The ornamental design for tractor, as shown and described. 